//存储到本地缓存
export function saveToLocal(id,key,value){
	let seller = window.localStorage.__seller__;
	if(!seller){
		seller = {};
		seller[id] = {};
	}else{
		seller = JSON.parse(seller);
		if(!seller[id]){
			seller[id] = {};
		}
	}
	seller[id][key] = value;
	window.localStorage.__seller__ = JSON.stringify(seller);
}
//从本地缓存读取
export function loadFromLocal(id,key,def){
	let seller = window.localStorage.__seller__;
	if(!seller){
		return def;
	}
	seller = JSON.parse(seller)[id];
	if(!seller){
		return def;
	}
	let ret = seller[key];
	return ret || def;
}